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Opt Lett. 2013 Apr 1;38(7):1173-5. doi: 10.1364/OL.38.001173.

Complete spatial characterization of an optical wavefront using a variable-separation pinhole pair.

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  • 1Department of Physics, University of Oxford, Clarendon Laboratory, Oxford, UK.


We present a technique for measuring the transverse spatial properties of an optical wavefront. Intensity and phase profiles are recovered by analysis of a series of interference patterns produced by the combination of a scanning X-shaped slit and a static horizontal slit; the spatial coherence may be found from the same data. We demonstrate the technique by characterizing high harmonic radiation generated in a gas cell, however the method could be extended to a wide variety of light sources.

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